55961838 has 12 divisors (see below), whose sum is σ = 121250688. Its totient is φ = 18653940.

The previous prime is 55961833. The next prime is 55961863. The reversal of 55961838 is 83816955.

55961838 is a `hidden beast` number, since 559 + 61 + 8 + 38 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 55961793 and 55961802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55961831) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1554478 + ... + 1554513.

It is an arithmetic number, because the mean of its divisors is an integer number (10104224).

Almost surely, 2^55961838 is an apocalyptic number.

55961838 is an abundant number, since it is smaller than the sum of its proper divisors (65288850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55961838 is a wasteful number, since it uses less digits than its factorization.

55961838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3108999 (or 3108996 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 55961838 is about 7480.7645331209. The cubic root of 55961838 is about 382.4993105204.

The spelling of 55961838 in words is "fifty-five million, nine hundred sixty-one thousand, eight hundred thirty-eight".